What is the best way to search to create conversations in MongoDb?

Question

MongoDB

I have an array of messages. From it, an array of id of those people with whom the user is corresponding is formed. In order to form a page of correspondence, I need to select people from the database and take some data I need about each of them. ( avatar, name, status: online, online, ...... )
What is the best way to search?
in one gulp

User.find({_id: {$in: dialogPersons}}, function(err, persons)

Or choose each one individually, and then give the result?
Thanks in advance)

Answer 1

Gulp faster.

Answer 2

You can use populate() , it will effectively do this for you.